kmk_cmp: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/kmk_cmp - from package: kBuild

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/kmk_cmp - from package: kBuild

You may install the required package with command apt-get install {package}

Error in other languages:
kmk_cmp: bevel nie gevind nie
kmk_cmp: comandă negăsită
kmk_cmp: comando não encontrado
kmk_cmp: commande introuvable
kmk_cmp: command not found
kmk_cmp: käsku ei ole
kmk_cmp: không tìm thấy lệnh
kmk_cmp: komanda nerasta
kmk_cmp: Kommando nicht gefunden.
kmk_cmp: kommandot finns inte
kmk_cmp: komut yok
kmk_cmp: nie znaleziono polecenia
kmk_cmp: níor aimsíodh an t-ordú
kmk_cmp: no se encontró la orden
kmk_cmp: no s'ha trobat l'ordre
kmk_cmp: opdracht niet gevonden
kmk_cmp: parancs nem található
kmk_cmp: perintah tidak ditemukan
kmk_cmp: príkaz nenájdený
kmk_cmp: příkaz nenalezen
kmk_cmp: команда не найдена
kmk_cmp: командата не е открита
kmk_cmp: 命令找不到
kmk_cmp: コマンドが見つかりません